Reenforcement-applying mechanism



4 March 9 1926.

J. G. SWAB REENFORCEMEN T APPLYING MECHANISM Filed May 5, 1923 5 Sheets-Sheet 1 avw'emtoz JA Y 6. SW48 March 9 1926. 1,576,009

J. G. SWAB REENFORCEMENT APPLYING MECHANISM Filed May 5, 1923 3 Sheets-Sheet 2 March 9 1926. 1,576,009

- J. G. SWAB REENFORCEMENT APPLYING MECHANISM Filed May 5, 1923 5 Sheets-Sheet 5 NVENTQR Jay 6. 5wab.

Patented Mar. 9, 1926.

- UNITED STATES PATENT on-Free.

JAY G. :SWAB, or BROOKLYN, NEW YORK, ASSIGNOR '10 H'ENRY rannonnnn, JR, o1 1 NEW YORK, 1v. Y. I

REENFORCEMENT-APPLYING MECHANISM.

Application niedna 5, 1923. Serial No. ceases.

1 To all whom it may concern:

Be it known that I, JAY G. :SWAB, a citizen of the United States, and resident of New York 'city, borough of Brooklyn, county of Kings, State of New York, have invented an Improvement in Reenforcement-Apply'ing Mechanism, of which the following is a specification.

The presentinvention relates to apparatus for use in the manufacture of envelopes and more particularly to a device for applying reenforcement to the envelope blankduring the manufacture of the .envelope.

Envelopes of certain types are provided with cooperating fastening devices for holding the flaps in closed relation. 'Such fastening devices may comprise cooperating -ele ments one of which is attached to the flap and the other to the body of the envelope, a string being secured to one and being arranged for engagement with the other, or they may comprise a metal fastener permanently secured to the body of the envelope and arranged to engage a reenforced hole in the flap in such manneras to secure the same in closed relation. In order to prevent the fastener from tearing out of the envelope and also in order to hold the fastener in rigid position in use in case a metallic fastener of bendable material is employed, it is desirable to reenforce the envelope at the point where the fastener is secured thereto as by means of a reenforcing patch. If the reenforcement lies on the outside it presents a more or less unsightly appearance. If it lies on the inside of the envelope it tends to interfere with the insertion of papers by catching the edges thereof. 7

The present invention has for an object to provide improved means for applying reenforcement and one which will be'reliable and economical in operation.

The invention-has also for an object to provide means whereby the reenforcement may be applied during themanufacture of the envelope so that in'the finished article it will lie within the seam.

The nature and objects of the invention will be-better understood from a description of a selected illustrative embodiment thereof. For the purpose of such description,

reference should 'be had to the accompanying drawings forming a part "hereof.

Figure "1 is a side view of reenforcement appiying mechanism constructed in accordance with and enibodying the principles of view of the reenforce nism being indicated.

In the apparatus shown for the purpose of illustration, the reenforcel'nent is applied to the envelope blank while it :is held in position on a conveyor roll 5. The reenforcement may be fed to applying position in any suitable manner. As shownthe re} enforcement 1s 1n the form. of a continuous tape 6 supplied in a roll 7"from which-it is,

drawn as required.

The reen'forcement may be affixed to the blank in any suitable manner. In the arrangement shown, paste'or other adhesive is applied to "the blank during its travel through the machine along the line of the proposed seam and the reenfor'ce'nient which may be plain material without gum or paste,

is secured to the blank by thisfpas'te, after which additional paste preferably isappli'ed to the exterior of the reenforcement in order plan View of sectional con-- I (it) that the seam may be continuous when the blank is folded to form an envelope.

The apparatus illustrated is designed for use in the manufacture of envelopes of the typewherein a blank having parallel side edges is folded to tubular form, *the extreme side edge portions ofthe blank constituting seam forming areas which are overlapped and pasted together to form a central-seam.

One seam forming area lies parallel and closeto'theedge of the 'roll 5 as shownin Figure 1 and receives paste from a nozzlelo.

The conveyor froll'5 may be of any suitable construction and may either "becofntinuous ormay be sectional. in-Figures a sectional 1 applying device relative to the forwardedge of the blank to determine the position of the reenforcement on the blank.

In the arrangement shown, the strip of reenforcing material is led through aguide 15 from'which the end projects as indicated at 16 to be applied to theenvelope blank. The operation of the devlce is'lsuch that "the reenforcement material is fed step by step through this guide 15. During the [interval between successive feeding movements a blade 18, is projected inwardly" to partially sever the strip. The blade is actuated from a cam l9 on the feed roll shaft through the levers 20, 21 and a connecting link 22; The blade 18 presents an interrupted edge as indicatcd in Figure 3, portions of thestrip beingleft uncut by the notched portions 23 of the blade, whereby the strip may be drawn forward to feedthe same.

Asa convenient means for affixing the reenforcement to the envelope blank there is shown a clamp or gripper member 25 pivota'lly mounted on the feed roll. This grip per has an outwardlyextending arm 26 with a cam engaging roller 27 which is actuated by a stationary cam28. The design ofthe cam 28 is such that whenfduring the rotanon of the conveyor roll 5, the gripper arrivesa opposite the projecting end 16 of the reenforcement strip it willmove sharply inwardly and downwardly to press the reenforcement against the envelope blank car ried by the conveyor roll. The continuing rotation of the conveyor while the men .forcement is thus gripped causes the strip to be drawn through the guide or fed. As shownthe gripper cooperates with other de- Ivices not only to feed the strip but also to sever the aiiix'ed length of reinforcingma terial" from said strip; Inthe structure illustrated, the severing is accomplished by providing a clamp 30 for holding the strip momentarily at predetermined times. Upon rotation of the clamp member a blade grips the strip betweenitself and an anvil 32 on the guide. This clamp is provided with an upwardlyextending arm 33 which is v actuated through a'bell crank 1ever3 l-[one arm "of which carrles a roller35ithat s actuated by a cam 36 on'th e conveyor 'roll shaft, lThe operation of the clamp is timed to the strip just after a length equal to the lengthof a single patch has been fed. In operation jthe'gripper 25fengages the projectingfend of the reenforcinglstrip and i 'fmovesiforward with the feed roll',thereby "c'lrawing out"a predetermined lengthof the within the seam.

reenforcing strip. When a length equal to i the length of the individual patch has been withdrawn, the clam 30 operates to hold the strip, the clamp being arrangedto engagethe section of the reenforcement next behind that, actually being applied. The

pull of the clamp member upon the applied reenforcement then severs such applied reenforcement from the next following section, leaving such following section projecting in position to be engaged by the clamp member upon the next succeeding patch applying operation. The gripper having completed its function isthen returned by itsfcam 28 to its opeirposition; The envelope blank now presents a line ofpaste which is interru ted by the section of reenfor'cement applied that the pasted seam of the finished envelope may becontinuous, paste is now applied to the exterior of the reenforcement by means ofa paste applying device 40 which isoperated to apply a ljii nitedquantity of paste to theexterior face of the patch only. This paste is applied as the blank passes forward over the guide ways 41. The flow of paste or other adhesive in the nozzles 10 and lO may be controlled by suitable cam actuated valves as is known in theart." It is unnecessary to'illustrate herein suclr control means in detail. It is indicated diagrammatically.

As the envelopeblank with the reenforcctheretof In order V ment applied thereto passes forward to the envelope folding mechanism the side wings "are folded laterally by thefolding plates 44 and to bring the side wings in overlapping relatlon Wltl'ltllfl reenforcenient with in the seam. The bottom flap of the-envelope is then folded by the rolls 46 to com plete the envelope as is usualin machines of this character.

" The apparatus shown is illustrative merely and should not be considered as defining the limits of the invention. Various modifications and other embodiments may be made without departing from the spirit of the invention. 5 Iclaini: d 1. Inapparatusfor use in the manufacture of envelopes, in combination means for affixing reenforcement to the blank at a predetermined point on'a seam forming area and means for folding the blank to form an envelope wlth the aiiixed reenforcement 2. In apparatus'for usein' the manufacture ofenvelopes, in combination means for ture of envelopes, in combination conveyor means for carrying an envelope blank having paste applied to alimited area along one edge thereof, means for feedin reenforcement to a point in registry with a por- 'tion of said limited area, and means cooperating with the conveyor means for pressing the reenforcement against the blank within the-limited area to affix the reenforcement to the blank.

4. In apparatus for use in the manufacture of envelopes, in combination conveyor means for carrying an envelope blank, means for supporting reenforcement in proximity to the path of the blank, means cooperating with the conveyor means for affixing the reenforcement to the blank during the movement of the blank on the conveyor.

5. In apparatus for use in the manufacture of envelopes, in combination means for supplying and affixing a reenforcing patch to the envelope blank and means for applying paste to the exterior of the afiixed' patch.

6. In apparatus for use in the manufacture of envelopes, in combination a conveyor member for carrying an envelope blank, means for supplying reenforcement to a position adjacent said conveyor member, a clampcarried by the conveyor memberarranged to clamp a section of reenforcement against an envelope blank to affix it thereto during the movement of the conveyor memher and to draw the reenforcement from said supplying means.

7. In apparatus for use in the manufacture of envelopes, in combination conveyor 'means for carrying an envelope blank,

means for feeding reenforcing patches successively to patch applying position adjacent the conveyor means, means for pressing a patch against an envelope blank during the feeding movement of said conveyor means to afiix the patch to the envelope blank.

8. In apparatus for use in the manufacture of envelopes in combination means for conveying an envelope blank, means for guiding a reenforcing strip to a point adj acent the path of the envelope blank, means for partially severing the reenforcing strip into predetermined lengths, means for clamping the free end of the reenforcing strip against the envelope blank during the conveying movement to afiix a portion thereof to the envelope blank and to draw out a length of the strlp, and means for clamping the reenforcing strip beyond a point of partial severing to cause severing of the strip by the envelope feed and clamping means. i

9. In apparatus for use in the manufacture of envelopes, in combination a conveyor roll, a support for a reenforoing strip adjacent the conveyor, means for partially envelope blank carried'by said conveyor severing the reenforcing strip at predetermined spaced points, a clamp 'mounted on the conveyor roll for clamping the end portion of the reenforcing strip aga nst an r'ol l,-and means operable a predetermined interval after the operation of the clamp for holding the reenforcin'g' strip against further feed thereof to'cause further move ment of the feed roll and clamp to sever the strip.

10. In apparatus for use in the manufacture of envelopes, in combination, means for feeding an envelope blank, means for applying a line of paste tothe blank during its feeding movement and means for affixing reenforcement to the blank at apredetermined point on said line during the feeding movement.

11. In apparatus for use in the manufacture of envelopes, in combination means for applying a line of paste to an envelope blank, means for afiixing reenforcement to the blank at a predetermined point on said line, and means for folding the blank to form an envelope.

12. In apparatus for use in the manufacblank, means for afiixing 'reenforcement to the blank at a predetermined point on said line, means for applying paste to the exterior of said reenforcement, and means/for folding the blank to form an envelope with the reenforcement within a seam;

l4. The combination with a conveyor roll for feeding an envelope blank of means for supplying reenforcement to a point adjacent the feeding roll, a clamp carried by the feeding roll engageable with the reenforcement to press the same against the envelope blank to affix it thereto, and a cam actuat ing said clamp.

15. In paper working apparatus-in combination, means for feeding a blank, means for ailixing reenforcement to the blank at a predetermined point on a seam forming area and means for folding the blank to bringthe seam forming areas in overlapped relation to form a seam with the reenforcement within the seam.

16. In paper working apparatus in combination, means for supporting a blank having seam forming areas, means for applying paste along one seam forming area, means for aflixing reenforcement, to the blank at a predetermined point on one seam forming area and means for folding the blank to engage the seam forming areas to form ofsuch areas, andmeansior manipulating the seam with the reenforcement Within the the paper te s uperpose such ereas with the seam. 1 reenforeement therebetween. p 17. In paper Working apparatus in corn- In testimony whereof, I have sighed bination means for supporting. paper havname to thi specification this 25th day of ing areas to be superposed, means for ap- Apri1,1923. i i plying-paste to eneisuch area means'for V p ,p V J affixing a l'eenforcement to apo tion of QTIG L p H 5 a JAY G. SXVAB. 

